Suou Gaku

"Sometimes my fingers seem to touch you on their own."

He is a genius bassist who is always taken care of by the band members, but only awakens when he is playing the bass guitar. He uses an alias because his father was an artist who was arrested for "the incident."

When Kouki criticized him for being a NEET, he reluctantly started working as a freelance programmer, utilizing the hacking skills he learned to investigate the case.